Posts Tagged ‘solar cooker’

16 March

Sunisthefuture Team At Kiva As A Catalyst


Dear Readers,

(Please click onre linksbelow)

If you are in favor of renewable,  clean, or solar energy, please sign this petition for FIT/CLEAN Program, accessible at Thank you very much.

Dear friends and readers,

Few days after my meet at San Francisco, CA, with Milepointer-Kiva DOers, I emailed one of Kiva’s strategic planners.  I see Kiva (a microfinance global organization) as a vehicle to help magnify development of businesses, particularly for potential solar or renewable energy businesses for countries/locations with less developed infra-structures.  Below, is the letter/email I’d like to share with you:

Hi, Michelle,

It was wonderful to meet you at Kiva’s DO in SF, CA, even if only for few minutes.  I was so energized by all the positive energy that I started a Sunisthefuture Team at Kiva.
Since I am also running a site, to bring greater awareness to general public about solar energy, I have come across many projects and feel  that these projects will work beautifully with/Kiva and help to speed up the process of conversion of our planet into the renewable, cleaner, and safer world.  So, I’d like to share some links with you:
1.  One Laptop Per Child  (solar education, Jan. 28, 30, 2012 posts of at:

The company (One Laptop Per Child) that works on One Laptop Per Child may be able to work cooperatively with Kiva to help
more people in developing countries to have access to education and information.

2.  Solar Cooker (Jan. 5, 6, 7, 9, Feb. 18, 2012 posts at at:
There are several already established organizations that used to provide basic solar cookers…but may have stopped.
Making solar cookers available (at low costs) will solve much fuel, pollution problems, not to mention protecting women and children (who are usually the gatherers of firewood, often late at nights or going to places where they may become victims of rapes or harm). Solar cookers also help to solve much of the problems associated with water borne diseases.  There is E4C (Engineers For Change) organization that had come up with different solar cooker designs that will work at night (in the fifth post/link above).

3.  Haiti Empowerment Project-Solar Energy Project via Michigan State University (Jan. 23, 2012 post of
I am hoping that educators from various universities working on empowerment projects will help to educate Kiva’s field partners about
potential solar energy business ideas and help to spread the use of solar energy and starting of solar businesses.  The Kiva lenders will be looking forward to helping to fund these businesses.

4.  University of the People, the world’s first tuition-free online university at:
It may be tuition free, but interested students still need to provide a small fee (this is where Kiva may help).  Providing education is the most efficient way to bring people out of poverty and find ways to solve world problems.  Kiva and its lenders will be able to help students/people from all over the world to cooperatively reach the goal of obtaining education for these students/people who otherwise would not have been able to achieve this goal.

5.  Fistula Foundatioin at :
Even though this is not a serious problem in developed nations, obstetric fistula is still devastating in developing countries and need help.
Here is a link explaining what is fistual:
The mission for Fistula Foundation is to raise awareness and funding for fistula treatment, prevention and educational programs worldwide.
Helping these recovering women to start their own businesses will be a great service for these women and their communities.

6. Startup businesses entrepreneurs in USA also need help:
I see the potential of these organizations/businesses cooperating with Kiva and magnify the ability for Kiva to do a great deal of global good.
Finally, I’d like to invite you and your friends to read/listen to over 120 posts/video clips about solar energy at so we can all spread more sunshine across our planet.
~have a bright and sunny day~
sunisthefuture-Susan Sun Nunamaker
I hope this letter/email will serve as a catalyst to many future cooperative businesses/projects at Kiva to spread more sunshine across our planet and increase the chance of a cleaner, safer, and more prosperous world for all of us.  If you have any suggestions/ideas/comments for potential solar/renewable/green energy businesses, please feel free to email me at  .  Please keep in mind that I am soliciting for business ideas that may be applicable to any part of the world.
~let’s spread the sunshine~
~have a bright and sunny day~

Gathered, written, and posted by sunisthefuture-Susan Sun Nunamaker

Any comments and suggestions are welcomed at

Please also get into the habit of checking at these sites below for more on solar energy topics:

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24 January

Response From Kiva-More Green or Solar Businesses in the Future


Dear Readers,

(Please click onred links below)

If you are in favor of renewable,  clean, or solar energy, please sign this petition for FIT/CLEAN Program, accessible at Thank you very much.

Dear Friends and Readers,

I’d like to share part of an email from Kiva, by one of its Customer Service Team members, below:


Kiva has piloted green lending with a small number of loans that have been posted on our website, and if you search, you can see that some green loans that have been funded on Kiva over the past year.

Now, we’re beginning to focus on expanding our green loan offerings. To do this, we are working on finding new Field Partners who offer green loans and we’re also working on creating incentives to encourage our current Field Partners to post more green loans. We hope to have more green loans posted that include both business and personal loans that reduce waste and pollution or deal with recycling and repurposing used materials.

In the meantime, you can check out this Field Partner in Kenya:
This field partner received a “innovation” social performance badge.

For more information about social performance badges in innovation you can check out this link:

*I learned something new today, from the video clip below: Kiva means Unity and Agreement in Swahili


Dear Friends & Readers, please keep in mind that solar energy businesses would fall under the Green Business Attribute at Kiva because solar energy businesses would help to reduce waste and pollution. Examples such as solar cookers (please refer to Jan. 5-9, 2012 posts of Jan. 5, 2012 post of ; Jan. 6, 2012 post of ; Jan. 7, 2012 post of ; Jan. 9, 2012 post of, solar hot water heater (April 6-7, 2011 posts of , April 6, 2011 post of , April 7, 2011 post of ), and solar panels, etc. would help to reduce pollution (July 31, 2011 post of ,  July 31, 2011 post of in developing countries.  This will ultimately impact all of us, regardless which part of the planet earth you/we reside in.  So, let’s wish Kiva the best in their future endeavors in finding more new Field Partners familiar with the possibilities of Green/Solar/Renewable Energy Businesses.  Those of you reading this post, if you have more suggestions/comments/ideas for small solar/renewable energy businesses for developing nations and/or USA, please email me at and I’ll be happy to share your suggestions with Kiva and various universities and project organizational groups  .  Let’s spread the small Green/Solar/Renewable Energy businesses throughout the planet earth like wild fire…cooperating together, we can make our world a better place!

~have a bright and sunny day~

written and posted by sunisthefuture-Susan Sun Nunamaker,

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6 January

Solar Cookers, Including Parabolic Mirror Solar Stove Oven


Dear Readers,

(Please click on red links below)

If you are in favor of renewable,  clean, or solar energy, please sign this petition for FIT/CLEAN Program, accessible at Thank you very much.

Greetings, my friends and readers,

As long as we’re on the subject of cooking, let’s take a look at some other possible cook wares and what Wikipedia has to say about solar cookers, below:

Using solar cookers


Solar oven in use

The different kinds of solar cookers have somewhat different methods for use, but most follow the same basic principles.

Food is prepared as it would be for an oven or stove top. Because food cooks faster when it is in smaller pieces, solar cookers usually cut the food into smaller pieces than they might otherwise. For example, potatoes are usually cut into bite-sized pieces rather than being roasted whole. For very simple cooking, such as melting butter or cheese, a lid may not be needed and the food may be placed on an uncovered tray or in a bowl. If several foods are to be cooked separately, then they are placed in different containers.

The container of food is placed inside the solar cooker, perhaps elevated on a brick, rocks, metal trivet, or other heat sink, and the solar cooker is placed in direct sunlight. If the solar cooker is entirely in direct sunlight, then the shadow of the solar cooker will not overlap with the shadow of any nearby object. Foods that cook quickly may be added to the solar cooker later. Rice for a mid-day meal might be started early in the morning, with vegetables, cheese, or meat added to the solar cooker in the middle of the morning. Depending on the size of the solar cooker and the number and quantity of cooked foods, a family may use one or more solar cookers.

The solar cooker is turned towards the sun and left until the food is cooked. Unlike cooking on a stove or over a fire, which may require more than an hour of constant supervision, food in a solar cooker is generally not stirred or turned over, both because it is unnecessary and because opening the solar cooker allows the trapped heat to escape and thereby slows the cooking process. If wanted, the solar cooker may be checked every one to two hours, to turn the cooker to face the sun more precisely and to ensure that shadows from nearby buildings or plants have not blocked the sunlight. If the food will be left untended for many hours during the day, then the solar cooker is often turned to face the point where the sun will be when it is higher in the sky, instead of towards its current position.

The cooking time depends primarily on the equipment being used, the amount of sunlight at the time, and the quantity of food that needs to be cooked. Air temperature, wind, and latitude also affect performance. Food cooks faster in the two hours before and after the local solar noon than it does in either the early morning or the late afternoon. Larger quantities of food, and food in larger pieces, take longer to cook. As a result, only general figures can be given for cooking time. With a small solar panel cooker, it might be possible to melt butter in 15 minutes, to bake cookies in 2 hours, and to cook rice for four people in 4 hours. However, depending on the local conditions and the solar cooker type, these projects could take half as long, or twice as long.

A low-cost thermometer has been invented to provide a reliable method for determining when the cooker has reached the temperature for pasteurization of water or milk (65 deg. C or 149 deg. F). This device is called the Water Pasteurization Indicator or WAPI.

It is difficult to burn food in a solar cooker. Food that has been cooked even an hour longer than necessary is usually indistinguishable from minimally cooked food. The exception to this rule is some green vegetables, which quickly change from a perfectly cooked bright green to olive drab, while still retaining the desirable texture.

For most foods, such as rice, the typical person would be unable to tell how it was cooked from looking at the final product. There are some differences, however: Bread and cakes brown on their tops instead of on bottom. Compared to cooking over a fire, the food does not have a smoky flavor.


Solar cookers use no fuel, which means that their users do not need to fetch or pay for firewood, gas, electricity, or other fuels. Therefore, over time a solar cooker can pay for itself in reduced fuel costs. Since it reduces firewood use, the solar cooker reduces deforestation and habitat loss. Since there are about 2 billion people who are still cooking on open fires, widespread use of solar cookers could have large economic and environmental benefits.

Solar box cookers attain temperatures of up to about 165 deg. C (325 deg. F), so they can be used to sterilize water or prepare most foods that can be made in a conventional oven or stove, from baked bread to steamed vegetables to roasted meat. When solar ovens are placed outside, they do not contribute unwanted heat inside houses.

Solar cookers do not produce any smoke as a product of combustion. The indoor concentration of health-damaging pollutants from a typical wood-fired cooking stove creates carbon monoxide and other noxious fumes at anywhere between seven and 500 times over the allowable limits. Fire-based cooking also produces ashes and soot, which make the home dirtier. However, any type of cooking, including solar cooking, can evaporate grease, oil, etc., from the food into the air.

Unlike cooking over an open fire, children cannot be burned by touching many types of solar cookers, which are made from cardboard or plastic and do not get hot. Unlike all fuel-based cooking arrangements, these solar cookers are not fire hazards. However, solar cookers that concentrate sunlight, e.g. with paraboloidal reflectors (our chef Dan Rojas in the video clip below believes that it is easier, slower, and allows cover, to cook with a parabolic solar cooker than with the Fresnel lens as in previous post), do produce high temperatures which could cause injury or fire.


Solar cookers are less usable in cloudy weather and at high latitudes, so some fuel-based backup heat source must still be available in these conditions. Also, solar cooking provides hot food during or shortly after the hottest part of the day, rather than the evening when most people like to eat. The “integrated solar cooking” concept accepts these limitations, and includes a fuel-efficient stove and an insulated heat storage container to provide a complete solution.

Many solar cookers take longer time to cook food than a fuel-based oven. Using these solar cookers therefore requires that food preparation be started several hours before the meal. However, it requires less hands-on time cooking, so this is often considered a reasonable trade-off.

Cooks may need to learn special cooking techniques to fry common foods, such as fried eggs or flat breads like chapatis and tortillas. It may not be possible to safely or completely cook some thick foods, such as large roasts, loaves of bread, or pots of soup, particularly in small panel cookers; the cook may need to divide these into smaller portions before cooking.

Some solar cooker designs are affected by strong winds, which can slow the cooking process, cool the food, and disturb the reflector. In these cases it is necessary to anchor the reflector with string and weights.

posted by sunisthefuture-Susan Sun Nunamaker,

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Any comments and suggestions are welcomed at

Please also get into the habit of checking at these sites below for more on solar energy topics:

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